EFFECT OF NUMBER OF TEST SPECIMENS ON TEST RESULTS ON SLAG-LIME-FLYASH MIXTURES

A SCIENTIFIC APPROACH IS SET FORTH WHICH MAY BE USED IN EVALUATING NEW HIGHWAY MATERIALS. THIS APPROACH HAS BEEN USED IN THE EVALUATION OF SLAG-LIME-FLYASH MIXTURES AT THE UNIVERSITY OF ILLINOIS IN COOPERATION WITH THE ILLINOIS DIVISION OF HIGHWAYS AND THE BUREAU OF PUBLIC ROADS. WET- BOTTOM BOILER SLAG AND FLYASH ARE TWO BY-PRODUCTS OF THE COMBUSTION OF POWDERED BITUMINOUS COAL. THESE MATERIALS HAVE BEEN COMBINED WITH LIME AND WATER TO PRODUCE A MIXTURE THAT MAY BE USED AS A BASE COURSE FOR BITUMINOUS SURFACES. NUMEROUS LABORATORY TECHNIQUES AND TESTING METHODS HAVE BEEN DEVELOPED THAT WILL BE OF VALUE TO THOSE WHO MAY BE CONCERNED WITH THE ANALYSIS OF THIS OR SIMILAR MIXTURES IN FUTURE. THIS PAPER IS CONCERNED WITH THE IMPORTANCE OF RELATING THE NUMBER OF TEST SPECIMENS PREPARED TO THE VARIABILITY OF THE LABORATORY TECHNIQUES EMPLOYED, IN ORDER THAT THE SIGNIFICANCE OF TEST RESULTS MAY BE DETERMINED. IF THIS APPROACH IS FOLLOWED THE LABORATORY TEST RESULTS MAY BE INTERPRETED WITH A KNOWN DEGREE OF RELIABILITY. ANY CONCLUSIONS DRAWN FROM THE TEST DATA WILL THEREFORE BE OF SCIENTIFIC VALUE TO ALL CONCERNED. /AUTHOR/

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  • English

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  • Accession Number: 00232455
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 15 2004 2:43AM